src/common/docview.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/docview.cpp
   3 // Purpose:     Document/view classes
   4 // Author:      Julian Smart
   5 // Modified by: Vadim Zeitlin
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_DOC_VIEW_ARCHITECTURE
  28
  29 #include "wx/docview.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/list.h"
  33     #include "wx/string.h"
  34     #include "wx/utils.h"
  35     #include "wx/app.h"
  36     #include "wx/dc.h"
  37     #include "wx/dialog.h"
  38     #include "wx/menu.h"
  39     #include "wx/filedlg.h"
  40     #include "wx/intl.h"
  41     #include "wx/log.h"
  42     #include "wx/msgdlg.h"
  43     #include "wx/mdi.h"
  44     #include "wx/choicdlg.h"
  45 #endif
  46
  47 #if wxUSE_PRINTING_ARCHITECTURE
  48     #include "wx/prntbase.h"
  49     #include "wx/printdlg.h"
  50 #endif
  51
  52 #include "wx/confbase.h"
  53 #include "wx/filename.h"
  54 #include "wx/file.h"
  55 #include "wx/ffile.h"
  56 #include "wx/cmdproc.h"
  57 #include "wx/tokenzr.h"
  58 #include "wx/filename.h"
  59 #include "wx/vector.h"
  60 #include "wx/ptr_scpd.h"
  61
  62 #if wxUSE_STD_IOSTREAM
  63     #include "wx/ioswrap.h"
  64     #include "wx/beforestd.h"
  65     #if wxUSE_IOSTREAMH
  66         #include <fstream.h>
  67     #else
  68         #include <fstream>
  69     #endif
  70     #include "wx/afterstd.h"
  71 #else
  72     #include "wx/wfstream.h"
  73 #endif
  74
  75 typedef wxVector<wxDocTemplate *> wxDocTemplates;
  76
  77 // ----------------------------------------------------------------------------
  78 // wxWidgets macros
  79 // ----------------------------------------------------------------------------
  80
  81 IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler)
  82 IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler)
  83 IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject)
  84 IMPLEMENT_DYNAMIC_CLASS(wxDocManager, wxEvtHandler)
  85 IMPLEMENT_CLASS(wxDocChildFrame, wxFrame)
  86 IMPLEMENT_CLASS(wxDocParentFrame, wxFrame)
  87
  88 #if wxUSE_PRINTING_ARCHITECTURE
  89     IMPLEMENT_DYNAMIC_CLASS(wxDocPrintout, wxPrintout)
  90 #endif
  91
  92 IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject)
  93
  94 // ============================================================================
  95 // implementation
  96 // ============================================================================
  97
  98 // ----------------------------------------------------------------------------
  99 // private helpers
 100 // ----------------------------------------------------------------------------
 101
 102 namespace
 103 {
 104
 105 wxWindow *wxFindSuitableParent()
 106 {
 107     wxWindow * const win = wxGetTopLevelParent(wxWindow::FindFocus());
 108
 109     return win ? win : wxTheApp->GetTopWindow();
 110 }
 111
 112 wxString FindExtension(const wxString& path)
 113 {
 114     wxString ext;
 115     wxFileName::SplitPath(path, NULL, NULL, &ext);
 116
 117     // VZ: extensions are considered not case sensitive - is this really a good
 118     //     idea?
 119     return ext.MakeLower();
 120 }
 121
 122 // return the string used for the MRU list items in the menu
 123 //
 124 // NB: the index n is 0-based, as usual, but the strings start from 1
 125 wxString GetMRUEntryLabel(int n, const wxString& path)
 126 {
 127     // we need to quote '&' characters which are used for mnemonics
 128     wxString pathInMenu(path);
 129     pathInMenu.Replace("&", "&&");
 130
 131     return wxString::Format("&%d %s", n + 1, pathInMenu);
 132 }
 133
 134 } // anonymous namespace
 135
 136 // ----------------------------------------------------------------------------
 137 // Definition of wxDocument
 138 // ----------------------------------------------------------------------------
 139
 140 wxDocument::wxDocument(wxDocument *parent)
 141 {
 142     m_documentModified = false;
 143     m_documentParent = parent;
 144     m_documentTemplate = NULL;
 145     m_commandProcessor = NULL;
 146     m_savedYet = false;
 147 }
 148
 149 bool wxDocument::DeleteContents()
 150 {
 151     return true;
 152 }
 153
 154 wxDocument::~wxDocument()
 155 {
 156     DeleteContents();
 157
 158     if (m_commandProcessor)
 159         delete m_commandProcessor;
 160
 161     if (GetDocumentManager())
 162         GetDocumentManager()->RemoveDocument(this);
 163
 164     // Not safe to do here, since it'll invoke virtual view functions
 165     // expecting to see valid derived objects: and by the time we get here,
 166     // we've called destructors higher up.
 167     //DeleteAllViews();
 168 }
 169
 170 bool wxDocument::Close()
 171 {
 172     if (OnSaveModified())
 173         return OnCloseDocument();
 174     else
 175         return false;
 176 }
 177
 178 bool wxDocument::OnCloseDocument()
 179 {
 180     // Tell all views that we're about to close
 181     NotifyClosing();
 182     DeleteContents();
 183     Modify(false);
 184     return true;
 185 }
 186
 187 // Note that this implicitly deletes the document when the last view is
 188 // deleted.
 189 bool wxDocument::DeleteAllViews()
 190 {
 191     wxDocManager* manager = GetDocumentManager();
 192
 193     // first check if all views agree to be closed
 194     const wxList::iterator end = m_documentViews.end();
 195     for ( wxList::iterator i = m_documentViews.begin(); i != end; ++i )
 196     {
 197         wxView *view = (wxView *)*i;
 198         if ( !view->Close() )
 199             return false;
 200     }
 201
 202     // all views agreed to close, now do close them
 203     if ( m_documentViews.empty() )
 204     {
 205         // normally the document would be implicitly deleted when the last view
 206         // is, but if don't have any views, do it here instead
 207         if ( manager && manager->GetDocuments().Member(this) )
 208             delete this;
 209     }
 210     else // have views
 211     {
 212         // as we delete elements we iterate over, don't use the usual "from
 213         // begin to end" loop
 214         for ( ;; )
 215         {
 216             wxView *view = (wxView *)*m_documentViews.begin();
 217
 218             bool isLastOne = m_documentViews.size() == 1;
 219
 220             // this always deletes the node implicitly and if this is the last
 221             // view also deletes this object itself (also implicitly, great),
 222             // so we can't test for m_documentViews.empty() after calling this!
 223             delete view;
 224
 225             if ( isLastOne )
 226                 break;
 227         }
 228     }
 229
 230     return true;
 231 }
 232
 233 wxView *wxDocument::GetFirstView() const
 234 {
 235     if (m_documentViews.GetCount() == 0)
 236         return NULL;
 237     return (wxView *)m_documentViews.GetFirst()->GetData();
 238 }
 239
 240 wxDocManager *wxDocument::GetDocumentManager() const
 241 {
 242     return m_documentTemplate ? m_documentTemplate->GetDocumentManager() : NULL;
 243 }
 244
 245 bool wxDocument::OnNewDocument()
 246 {
 247     if ( !OnSaveModified() )
 248         return false;
 249
 250     DeleteContents();
 251     Modify(false);
 252     SetDocumentSaved(false);
 253
 254     const wxString name = GetDocumentManager()->MakeNewDocumentName();
 255     SetTitle(name);
 256     SetFilename(name, true);
 257
 258     return true;
 259 }
 260
 261 bool wxDocument::Save()
 262 {
 263     if ( AlreadySaved() )
 264         return true;
 265
 266     if ( m_documentFile.empty() || !m_savedYet )
 267         return SaveAs();
 268
 269     return OnSaveDocument(m_documentFile);
 270 }
 271
 272 bool wxDocument::SaveAs()
 273 {
 274     wxDocTemplate *docTemplate = GetDocumentTemplate();
 275     if (!docTemplate)
 276         return false;
 277
 278 #if defined(__WXMSW__) || defined(__WXGTK__) || defined(__WXMAC__)
 279     wxString filter = docTemplate->GetDescription() + wxT(" (") + docTemplate->GetFileFilter() + wxT(")|") + docTemplate->GetFileFilter();
 280
 281     // Now see if there are some other template with identical view and document
 282     // classes, whose filters may also be used.
 283
 284     if (docTemplate->GetViewClassInfo() && docTemplate->GetDocClassInfo())
 285     {
 286         wxList::compatibility_iterator node = docTemplate->GetDocumentManager()->GetTemplates().GetFirst();
 287         while (node)
 288         {
 289             wxDocTemplate *t = (wxDocTemplate*) node->GetData();
 290
 291             if (t->IsVisible() && t != docTemplate &&
 292                 t->GetViewClassInfo() == docTemplate->GetViewClassInfo() &&
 293                 t->GetDocClassInfo() == docTemplate->GetDocClassInfo())
 294             {
 295                 // add a '|' to separate this filter from the previous one
 296                 if ( !filter.empty() )
 297                     filter << wxT('|');
 298
 299                 filter << t->GetDescription() << wxT(" (") << t->GetFileFilter() << wxT(") |")
 300                        << t->GetFileFilter();
 301             }
 302
 303             node = node->GetNext();
 304         }
 305     }
 306 #else
 307     wxString filter = docTemplate->GetFileFilter() ;
 308 #endif
 309     wxString defaultDir = docTemplate->GetDirectory();
 310     if (defaultDir.IsEmpty())
 311         defaultDir = wxPathOnly(GetFilename());
 312
 313     wxString tmp = wxFileSelector(_("Save As"),
 314             defaultDir,
 315             wxFileNameFromPath(GetFilename()),
 316             docTemplate->GetDefaultExtension(),
 317             filter,
 318             wxFD_SAVE | wxFD_OVERWRITE_PROMPT,
 319             GetDocumentWindow());
 320
 321     if (tmp.empty())
 322         return false;
 323
 324     wxString fileName(tmp);
 325     wxString path, name, ext;
 326     wxFileName::SplitPath(fileName, & path, & name, & ext);
 327
 328     if (ext.empty())
 329     {
 330         fileName += wxT(".");
 331         fileName += docTemplate->GetDefaultExtension();
 332     }
 333
 334     SetFilename(fileName);
 335     SetTitle(wxFileNameFromPath(fileName));
 336
 337     // Notify the views that the filename has changed
 338     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 339     while (node)
 340     {
 341         wxView *view = (wxView *)node->GetData();
 342         view->OnChangeFilename();
 343         node = node->GetNext();
 344     }
 345
 346     // Files that were not saved correctly are not added to the FileHistory.
 347     if (!OnSaveDocument(m_documentFile))
 348         return false;
 349
 350    // A file that doesn't use the default extension of its document template cannot be opened
 351    // via the FileHistory, so we do not add it.
 352    if (docTemplate->FileMatchesTemplate(fileName))
 353    {
 354        GetDocumentManager()->AddFileToHistory(fileName);
 355    }
 356    else
 357    {
 358        // The user will probably not be able to open the file again, so
 359        // we could warn about the wrong file-extension here.
 360    }
 361    return true;
 362 }
 363
 364 bool wxDocument::OnSaveDocument(const wxString& file)
 365 {
 366     if ( !file )
 367         return false;
 368
 369     if ( !DoSaveDocument(file) )
 370         return false;
 371
 372     Modify(false);
 373     SetFilename(file);
 374     SetDocumentSaved(true);
 375 #if defined( __WXOSX_MAC__ ) && wxOSX_USE_CARBON
 376     wxFileName fn(file) ;
 377     fn.MacSetDefaultTypeAndCreator() ;
 378 #endif
 379     return true;
 380 }
 381
 382 bool wxDocument::OnOpenDocument(const wxString& file)
 383 {
 384     if ( !OnSaveModified() )
 385         return false;
 386
 387     if ( !DoOpenDocument(file) )
 388         return false;
 389
 390     SetFilename(file, true);
 391     Modify(false);
 392     m_savedYet = true;
 393
 394     UpdateAllViews();
 395
 396     return true;
 397 }
 398
 399 #if wxUSE_STD_IOSTREAM
 400 wxSTD istream& wxDocument::LoadObject(wxSTD istream& stream)
 401 #else
 402 wxInputStream& wxDocument::LoadObject(wxInputStream& stream)
 403 #endif
 404 {
 405     return stream;
 406 }
 407
 408 #if wxUSE_STD_IOSTREAM
 409 wxSTD ostream& wxDocument::SaveObject(wxSTD ostream& stream)
 410 #else
 411 wxOutputStream& wxDocument::SaveObject(wxOutputStream& stream)
 412 #endif
 413 {
 414     return stream;
 415 }
 416
 417 bool wxDocument::Revert()
 418 {
 419     return false;
 420 }
 421
 422
 423 // Get title, or filename if no title, else unnamed
 424 #if WXWIN_COMPATIBILITY_2_8
 425 bool wxDocument::GetPrintableName(wxString& buf) const
 426 {
 427     // this function can not only be overridden by the user code but also
 428     // called by it so we need to ensure that we return the same thing as
 429     // GetUserReadableName() but we can't call it because this would result in
 430     // an infinite recursion, hence we use the helper DoGetUserReadableName()
 431     buf = DoGetUserReadableName();
 432
 433     return true;
 434 }
 435 #endif // WXWIN_COMPATIBILITY_2_8
 436
 437 wxString wxDocument::GetUserReadableName() const
 438 {
 439 #if WXWIN_COMPATIBILITY_2_8
 440     // we need to call the old virtual function to ensure that the overridden
 441     // version of it is still called
 442     wxString name;
 443     if ( GetPrintableName(name) )
 444         return name;
 445 #endif // WXWIN_COMPATIBILITY_2_8
 446
 447     return DoGetUserReadableName();
 448 }
 449
 450 wxString wxDocument::DoGetUserReadableName() const
 451 {
 452     if ( !m_documentTitle.empty() )
 453         return m_documentTitle;
 454
 455     if ( !m_documentFile.empty() )
 456         return wxFileNameFromPath(m_documentFile);
 457
 458     return _("unnamed");
 459 }
 460
 461 wxWindow *wxDocument::GetDocumentWindow() const
 462 {
 463     wxView *view = GetFirstView();
 464     if (view)
 465         return view->GetFrame();
 466     else
 467         return wxTheApp->GetTopWindow();
 468 }
 469
 470 wxCommandProcessor *wxDocument::OnCreateCommandProcessor()
 471 {
 472     return new wxCommandProcessor;
 473 }
 474
 475 // true if safe to close
 476 bool wxDocument::OnSaveModified()
 477 {
 478     if ( IsModified() )
 479     {
 480         switch ( wxMessageBox
 481                  (
 482                     wxString::Format
 483                     (
 484                      _("Do you want to save changes to document %s?"),
 485                      GetUserReadableName()
 486                     ),
 487                     wxTheApp->GetAppDisplayName(),
 488                     wxYES_NO | wxCANCEL | wxICON_QUESTION,
 489                     GetDocumentWindow()
 490                  ) )
 491         {
 492             case wxNO:
 493                 Modify(false);
 494                 break;
 495
 496             case wxYES:
 497                 return Save();
 498
 499             case wxCANCEL:
 500                 return false;
 501         }
 502     }
 503
 504     return true;
 505 }
 506
 507 bool wxDocument::Draw(wxDC& WXUNUSED(context))
 508 {
 509     return true;
 510 }
 511
 512 bool wxDocument::AddView(wxView *view)
 513 {
 514     if ( !m_documentViews.Member(view) )
 515     {
 516         m_documentViews.Append(view);
 517         OnChangedViewList();
 518     }
 519     return true;
 520 }
 521
 522 bool wxDocument::RemoveView(wxView *view)
 523 {
 524     (void)m_documentViews.DeleteObject(view);
 525     OnChangedViewList();
 526     return true;
 527 }
 528
 529 bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
 530 {
 531     return GetDocumentTemplate()->CreateView(this, flags) != NULL;
 532 }
 533
 534 // Called after a view is added or removed.
 535 // The default implementation deletes the document if
 536 // there are no more views.
 537 void wxDocument::OnChangedViewList()
 538 {
 539     if ( m_documentViews.empty() && OnSaveModified() )
 540         delete this;
 541 }
 542
 543 void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
 544 {
 545     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 546     while (node)
 547     {
 548         wxView *view = (wxView *)node->GetData();
 549         if (view != sender)
 550             view->OnUpdate(sender, hint);
 551         node = node->GetNext();
 552     }
 553 }
 554
 555 void wxDocument::NotifyClosing()
 556 {
 557     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 558     while (node)
 559     {
 560         wxView *view = (wxView *)node->GetData();
 561         view->OnClosingDocument();
 562         node = node->GetNext();
 563     }
 564 }
 565
 566 void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
 567 {
 568     m_documentFile = filename;
 569     if ( notifyViews )
 570     {
 571         // Notify the views that the filename has changed
 572         wxList::compatibility_iterator node = m_documentViews.GetFirst();
 573         while (node)
 574         {
 575             wxView *view = (wxView *)node->GetData();
 576             view->OnChangeFilename();
 577             node = node->GetNext();
 578         }
 579     }
 580 }
 581
 582 bool wxDocument::DoSaveDocument(const wxString& file)
 583 {
 584 #if wxUSE_STD_IOSTREAM
 585     wxSTD ofstream store(file.mb_str(), wxSTD ios::binary);
 586     if ( !store )
 587 #else
 588     wxFileOutputStream store(file);
 589     if ( store.GetLastError() != wxSTREAM_NO_ERROR )
 590 #endif
 591     {
 592         wxLogError(_("File \"%s\" could not be opened for writing."), file);
 593         return false;
 594     }
 595
 596     if (!SaveObject(store))
 597     {
 598         wxLogError(_("Failed to save document to the file \"%s\"."), file);
 599         return false;
 600     }
 601
 602     return true;
 603 }
 604
 605 bool wxDocument::DoOpenDocument(const wxString& file)
 606 {
 607 #if wxUSE_STD_IOSTREAM
 608     wxSTD ifstream store(file.mb_str(), wxSTD ios::binary);
 609     if ( !store )
 610 #else
 611     wxFileInputStream store(file);
 612     if (store.GetLastError() != wxSTREAM_NO_ERROR)
 613 #endif
 614     {
 615         wxLogError(_("File \"%s\" could not be opened for reading."), file);
 616         return false;
 617     }
 618
 619 #if wxUSE_STD_IOSTREAM
 620     LoadObject(store);
 621     if ( !store )
 622 #else
 623     int res = LoadObject(store).GetLastError();
 624     if ( res != wxSTREAM_NO_ERROR && res != wxSTREAM_EOF )
 625 #endif
 626     {
 627         wxLogError(_("Failed to read document from the file \"%s\"."), file);
 628         return false;
 629     }
 630
 631     return true;
 632 }
 633
 634
 635 // ----------------------------------------------------------------------------
 636 // Document view
 637 // ----------------------------------------------------------------------------
 638
 639 wxView::wxView()
 640 {
 641     m_viewDocument = NULL;
 642
 643     m_viewFrame = NULL;
 644 }
 645
 646 wxView::~wxView()
 647 {
 648     GetDocumentManager()->ActivateView(this, false);
 649     m_viewDocument->RemoveView(this);
 650 }
 651
 652 bool wxView::TryValidator(wxEvent& event)
 653 {
 654     wxDocument * const doc = GetDocument();
 655     return doc && doc->ProcessEventHere(event);
 656 }
 657
 658 void wxView::OnActivateView(bool WXUNUSED(activate), wxView *WXUNUSED(activeView), wxView *WXUNUSED(deactiveView))
 659 {
 660 }
 661
 662 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 663 {
 664     OnDraw(dc);
 665 }
 666
 667 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 668 {
 669 }
 670
 671 void wxView::OnChangeFilename()
 672 {
 673     // GetFrame can return wxWindow rather than wxTopLevelWindow due to
 674     // generic MDI implementation so use SetLabel rather than SetTitle.
 675     // It should cause SetTitle() for top level windows.
 676     wxWindow *win = GetFrame();
 677     if (!win) return;
 678
 679     wxDocument *doc = GetDocument();
 680     if (!doc) return;
 681
 682     win->SetLabel(doc->GetUserReadableName());
 683 }
 684
 685 void wxView::SetDocument(wxDocument *doc)
 686 {
 687     m_viewDocument = doc;
 688     if (doc)
 689         doc->AddView(this);
 690 }
 691
 692 bool wxView::Close(bool deleteWindow)
 693 {
 694     return OnClose(deleteWindow);
 695 }
 696
 697 void wxView::Activate(bool activate)
 698 {
 699     if (GetDocument() && GetDocumentManager())
 700     {
 701         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 702         GetDocumentManager()->ActivateView(this, activate);
 703     }
 704 }
 705
 706 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 707 {
 708     return GetDocument() ? GetDocument()->Close() : true;
 709 }
 710
 711 #if wxUSE_PRINTING_ARCHITECTURE
 712 wxPrintout *wxView::OnCreatePrintout()
 713 {
 714     return new wxDocPrintout(this);
 715 }
 716 #endif // wxUSE_PRINTING_ARCHITECTURE
 717
 718 // ----------------------------------------------------------------------------
 719 // wxDocTemplate
 720 // ----------------------------------------------------------------------------
 721
 722 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 723                              const wxString& descr,
 724                              const wxString& filter,
 725                              const wxString& dir,
 726                              const wxString& ext,
 727                              const wxString& docTypeName,
 728                              const wxString& viewTypeName,
 729                              wxClassInfo *docClassInfo,
 730                              wxClassInfo *viewClassInfo,
 731                              long flags)
 732 {
 733     m_documentManager = manager;
 734     m_description = descr;
 735     m_directory = dir;
 736     m_defaultExt = ext;
 737     m_fileFilter = filter;
 738     m_flags = flags;
 739     m_docTypeName = docTypeName;
 740     m_viewTypeName = viewTypeName;
 741     m_documentManager->AssociateTemplate(this);
 742
 743     m_docClassInfo = docClassInfo;
 744     m_viewClassInfo = viewClassInfo;
 745 }
 746
 747 wxDocTemplate::~wxDocTemplate()
 748 {
 749     m_documentManager->DisassociateTemplate(this);
 750 }
 751
 752 // Tries to dynamically construct an object of the right class.
 753 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 754 {
 755     wxDocument * const doc = DoCreateDocument();
 756
 757     // VZ: this code doesn't delete doc if InitDocument() (i.e. doc->OnCreate())
 758     //     fails, is this intentional?
 759
 760     return doc && InitDocument(doc, path, flags) ? doc : NULL;
 761 }
 762
 763 bool
 764 wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 765 {
 766     doc->SetFilename(path);
 767     doc->SetDocumentTemplate(this);
 768     GetDocumentManager()->AddDocument(doc);
 769     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 770
 771     if (doc->OnCreate(path, flags))
 772         return true;
 773     else
 774     {
 775         if (GetDocumentManager()->GetDocuments().Member(doc))
 776             doc->DeleteAllViews();
 777         return false;
 778     }
 779 }
 780
 781 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 782 {
 783     wxScopedPtr<wxView> view(DoCreateView());
 784     if ( !view )
 785         return NULL;
 786
 787     view->SetDocument(doc);
 788     if ( !view->OnCreate(doc, flags) )
 789         return NULL;
 790
 791     return view.release();
 792 }
 793
 794 // The default (very primitive) format detection: check is the extension is
 795 // that of the template
 796 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 797 {
 798     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 799     wxString anything = wxT ("*");
 800     while (parser.HasMoreTokens())
 801     {
 802         wxString filter = parser.GetNextToken();
 803         wxString filterExt = FindExtension (filter);
 804         if ( filter.IsSameAs (anything)    ||
 805              filterExt.IsSameAs (anything) ||
 806              filterExt.IsSameAs (FindExtension (path)) )
 807             return true;
 808     }
 809     return GetDefaultExtension().IsSameAs(FindExtension(path));
 810 }
 811
 812 wxDocument *wxDocTemplate::DoCreateDocument()
 813 {
 814     if (!m_docClassInfo)
 815         return NULL;
 816
 817     return (wxDocument *)m_docClassInfo->CreateObject();
 818 }
 819
 820 wxView *wxDocTemplate::DoCreateView()
 821 {
 822     if (!m_viewClassInfo)
 823         return NULL;
 824
 825     return (wxView *)m_viewClassInfo->CreateObject();
 826 }
 827
 828 // ----------------------------------------------------------------------------
 829 // wxDocManager
 830 // ----------------------------------------------------------------------------
 831
 832 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 833     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 834     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 835     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 836     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 837     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 838     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 839     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 840     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 841     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 842
 843     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 844     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateDisableIfNoDoc)
 845     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateDisableIfNoDoc)
 846     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateDisableIfNoDoc)
 847     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 848     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 849     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateDisableIfNoDoc)
 850     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 851     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 852
 853 #if wxUSE_PRINTING_ARCHITECTURE
 854     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 855     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 856
 857     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdateDisableIfNoDoc)
 858     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdateDisableIfNoDoc)
 859 #endif
 860 END_EVENT_TABLE()
 861
 862 wxDocManager* wxDocManager::sm_docManager = NULL;
 863
 864 wxDocManager::wxDocManager(long WXUNUSED(flags), bool initialize)
 865 {
 866     wxASSERT_MSG( !sm_docManager, "multiple wxDocManagers not allowed" );
 867
 868     sm_docManager = this;
 869
 870     m_defaultDocumentNameCounter = 1;
 871     m_currentView = NULL;
 872     m_maxDocsOpen = INT_MAX;
 873     m_fileHistory = NULL;
 874     if ( initialize )
 875         Initialize();
 876 }
 877
 878 wxDocManager::~wxDocManager()
 879 {
 880     Clear();
 881     delete m_fileHistory;
 882     sm_docManager = NULL;
 883 }
 884
 885 // closes the specified document
 886 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 887 {
 888     if (doc->Close() || force)
 889     {
 890         // Implicitly deletes the document when
 891         // the last view is deleted
 892         doc->DeleteAllViews();
 893
 894         // Check we're really deleted
 895         if (m_docs.Member(doc))
 896             delete doc;
 897
 898         return true;
 899     }
 900     return false;
 901 }
 902
 903 bool wxDocManager::CloseDocuments(bool force)
 904 {
 905     wxList::compatibility_iterator node = m_docs.GetFirst();
 906     while (node)
 907     {
 908         wxDocument *doc = (wxDocument *)node->GetData();
 909         wxList::compatibility_iterator next = node->GetNext();
 910
 911         if (!CloseDocument(doc, force))
 912             return false;
 913
 914         // This assumes that documents are not connected in
 915         // any way, i.e. deleting one document does NOT
 916         // delete another.
 917         node = next;
 918     }
 919     return true;
 920 }
 921
 922 bool wxDocManager::Clear(bool force)
 923 {
 924     if (!CloseDocuments(force))
 925         return false;
 926
 927     m_currentView = NULL;
 928
 929     wxList::compatibility_iterator node = m_templates.GetFirst();
 930     while (node)
 931     {
 932         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
 933         wxList::compatibility_iterator next = node->GetNext();
 934         delete templ;
 935         node = next;
 936     }
 937     return true;
 938 }
 939
 940 bool wxDocManager::Initialize()
 941 {
 942     m_fileHistory = OnCreateFileHistory();
 943     return true;
 944 }
 945
 946 wxFileHistory *wxDocManager::OnCreateFileHistory()
 947 {
 948     return new wxFileHistory;
 949 }
 950
 951 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
 952 {
 953     wxDocument *doc = GetCurrentDocument();
 954     if (!doc)
 955         return;
 956     if (doc->Close())
 957     {
 958         doc->DeleteAllViews();
 959         if (m_docs.Member(doc))
 960             delete doc;
 961     }
 962 }
 963
 964 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
 965 {
 966     CloseDocuments(false);
 967 }
 968
 969 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
 970 {
 971     CreateNewDocument();
 972 }
 973
 974 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
 975 {
 976     if ( !CreateDocument( wxEmptyString, 0) )
 977     {
 978         OnOpenFileFailure();
 979     }
 980 }
 981
 982 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
 983 {
 984     wxDocument *doc = GetCurrentDocument();
 985     if (!doc)
 986         return;
 987     doc->Revert();
 988 }
 989
 990 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
 991 {
 992     wxDocument *doc = GetCurrentDocument();
 993     if (!doc)
 994         return;
 995     doc->Save();
 996 }
 997
 998 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
 999 {
1000     wxDocument *doc = GetCurrentDocument();
1001     if (!doc)
1002         return;
1003     doc->SaveAs();
1004 }
1005
1006 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1007 {
1008 #if wxUSE_PRINTING_ARCHITECTURE
1009     wxView *view = GetCurrentView();
1010     if (!view)
1011         return;
1012
1013     wxPrintout *printout = view->OnCreatePrintout();
1014     if (printout)
1015     {
1016         wxPrinter printer;
1017         printer.Print(view->GetFrame(), printout, true);
1018
1019         delete printout;
1020     }
1021 #endif // wxUSE_PRINTING_ARCHITECTURE
1022 }
1023
1024 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1025 {
1026 #if wxUSE_PRINTING_ARCHITECTURE
1027     wxView *view = GetCurrentView();
1028     if (!view)
1029         return;
1030
1031     wxPrintout *printout = view->OnCreatePrintout();
1032     if (printout)
1033     {
1034         // Pass two printout objects: for preview, and possible printing.
1035         wxPrintPreviewBase *preview = new wxPrintPreview(printout, view->OnCreatePrintout());
1036         if ( !preview->Ok() )
1037         {
1038             delete preview;
1039             wxMessageBox( _("Sorry, print preview needs a printer to be installed.") );
1040             return;
1041         }
1042
1043         wxPreviewFrame *frame = new wxPreviewFrame(preview, (wxFrame *)wxTheApp->GetTopWindow(), _("Print Preview"),
1044                 wxPoint(100, 100), wxSize(600, 650));
1045         frame->Centre(wxBOTH);
1046         frame->Initialize();
1047         frame->Show(true);
1048     }
1049 #endif // wxUSE_PRINTING_ARCHITECTURE
1050 }
1051
1052 void wxDocManager::OnUndo(wxCommandEvent& event)
1053 {
1054     wxDocument *doc = GetCurrentDocument();
1055     if (!doc)
1056         return;
1057     if (doc->GetCommandProcessor())
1058         doc->GetCommandProcessor()->Undo();
1059     else
1060         event.Skip();
1061 }
1062
1063 void wxDocManager::OnRedo(wxCommandEvent& event)
1064 {
1065     wxDocument *doc = GetCurrentDocument();
1066     if (!doc)
1067         return;
1068     if (doc->GetCommandProcessor())
1069         doc->GetCommandProcessor()->Redo();
1070     else
1071         event.Skip();
1072 }
1073
1074 // Handlers for UI update commands
1075
1076 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1077 {
1078     event.Enable( true );
1079 }
1080
1081 void wxDocManager::OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event)
1082 {
1083     event.Enable( GetCurrentDocument() != NULL );
1084 }
1085
1086 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1087 {
1088     event.Enable( true );
1089 }
1090
1091 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1092 {
1093     wxDocument * const doc = GetCurrentDocument();
1094     event.Enable( doc && !doc->AlreadySaved() );
1095 }
1096
1097 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1098 {
1099     wxDocument *doc = GetCurrentDocument();
1100     if (!doc)
1101         event.Enable(false);
1102     else if (!doc->GetCommandProcessor())
1103         event.Skip();
1104     else
1105     {
1106         event.Enable( doc->GetCommandProcessor()->CanUndo() );
1107         doc->GetCommandProcessor()->SetMenuStrings();
1108     }
1109 }
1110
1111 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1112 {
1113     wxDocument *doc = GetCurrentDocument();
1114     if (!doc)
1115         event.Enable(false);
1116     else if (!doc->GetCommandProcessor())
1117         event.Skip();
1118     else
1119     {
1120         event.Enable( doc->GetCommandProcessor()->CanRedo() );
1121         doc->GetCommandProcessor()->SetMenuStrings();
1122     }
1123 }
1124
1125 wxView *wxDocManager::GetCurrentView() const
1126 {
1127     if (m_currentView)
1128         return m_currentView;
1129     if (m_docs.GetCount() == 1)
1130     {
1131         wxDocument* doc = (wxDocument*) m_docs.GetFirst()->GetData();
1132         return doc->GetFirstView();
1133     }
1134     return NULL;
1135 }
1136
1137 bool wxDocManager::TryValidator(wxEvent& event)
1138 {
1139     wxView * const view = GetCurrentView();
1140     return view && view->ProcessEventHere(event);
1141 }
1142
1143 namespace
1144 {
1145
1146 // helper function: return only the visible templates
1147 wxDocTemplates GetVisibleTemplates(const wxList& allTemplates)
1148 {
1149     // select only the visible templates
1150     const size_t totalNumTemplates = allTemplates.GetCount();
1151     wxDocTemplates templates;
1152     if ( totalNumTemplates )
1153     {
1154         templates.reserve(totalNumTemplates);
1155
1156         for ( wxList::const_iterator i = allTemplates.begin(),
1157                                    end = allTemplates.end();
1158               i != end;
1159               ++i )
1160         {
1161             wxDocTemplate * const temp = (wxDocTemplate *)*i;
1162             if ( temp->IsVisible() )
1163                 templates.push_back(temp);
1164         }
1165     }
1166
1167     return templates;
1168 }
1169
1170 } // anonymous namespace
1171
1172 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
1173 {
1174     // this ought to be const but SelectDocumentType/Path() are not
1175     // const-correct and can't be changed as, being virtual, this risks
1176     // breaking user code overriding them
1177     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1178     const size_t numTemplates = templates.size();
1179     if ( !numTemplates )
1180     {
1181         // no templates can be used, can't create document
1182         return NULL;
1183     }
1184
1185
1186     // normally user should select the template to use but wxDOC_SILENT flag we
1187     // choose one ourselves
1188     wxString path = pathOrig;   // may be modified below
1189     wxDocTemplate *temp;
1190     if ( flags & wxDOC_SILENT )
1191     {
1192         wxASSERT_MSG( !path.empty(),
1193                       "using empty path with wxDOC_SILENT doesn't make sense" );
1194
1195         temp = FindTemplateForPath(path);
1196         if ( !temp )
1197         {
1198             wxLogWarning(_("The format of file '%s' couldn't be determined."),
1199                          path);
1200         }
1201     }
1202     else // not silent, ask the user
1203     {
1204         // for the new file we need just the template, for an existing one we
1205         // need the template and the path, unless it's already specified
1206         if ( (flags & wxDOC_NEW) || !path.empty() )
1207             temp = SelectDocumentType(&templates[0], numTemplates);
1208         else
1209             temp = SelectDocumentPath(&templates[0], numTemplates, path, flags);
1210     }
1211
1212     if ( !temp )
1213         return NULL;
1214
1215     // check whether the document with this path is already opened
1216     if ( !path.empty() )
1217     {
1218         const wxFileName fn(path);
1219         for ( wxList::const_iterator i = m_docs.begin(); i != m_docs.end(); ++i )
1220         {
1221             wxDocument * const doc = (wxDocument*)*i;
1222
1223             if ( fn == doc->GetFilename() )
1224             {
1225                 // file already open, just activate it and return
1226                 if ( doc->GetFirstView() )
1227                 {
1228                     ActivateView(doc->GetFirstView());
1229                     if ( doc->GetDocumentWindow() )
1230                         doc->GetDocumentWindow()->SetFocus();
1231                     return doc;
1232                 }
1233             }
1234         }
1235     }
1236
1237
1238     // no, we need to create a new document
1239
1240
1241     // if we've reached the max number of docs, close the first one.
1242     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1243     {
1244         if ( !CloseDocument((wxDocument *)GetDocuments().GetFirst()->GetData()) )
1245         {
1246             // can't open the new document if closing the old one failed
1247             return NULL;
1248         }
1249     }
1250
1251
1252     // do create and initialize the new document finally
1253     wxDocument * const docNew = temp->CreateDocument(path, flags);
1254     if ( !docNew )
1255         return NULL;
1256
1257     docNew->SetDocumentName(temp->GetDocumentName());
1258     docNew->SetDocumentTemplate(temp);
1259
1260     // call the appropriate function depending on whether we're creating a new
1261     // file or opening an existing one
1262     if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
1263                              : docNew->OnOpenDocument(path)) )
1264     {
1265          // Document is implicitly deleted by DeleteAllViews
1266          docNew->DeleteAllViews();
1267          return NULL;
1268     }
1269
1270     // add the successfully opened file to MRU, but only if we're going to be
1271     // able to reopen it successfully later which requires the template for
1272     // this document to be retrievable from the file extension
1273     if ( !(flags & wxDOC_NEW) && temp->FileMatchesTemplate(path) )
1274         AddFileToHistory(path);
1275
1276     return docNew;
1277 }
1278
1279 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1280 {
1281     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1282     const size_t numTemplates = templates.size();
1283
1284     if ( numTemplates == 0 )
1285         return NULL;
1286
1287     wxDocTemplate * const
1288     temp = numTemplates == 1 ? templates[0]
1289                              : SelectViewType(&templates[0], numTemplates);
1290
1291     if ( !temp )
1292         return NULL;
1293
1294     wxView *view = temp->CreateView(doc, flags);
1295     if ( view )
1296         view->SetViewName(temp->GetViewName());
1297     return view;
1298 }
1299
1300 // Not yet implemented
1301 void
1302 wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1303 {
1304 }
1305
1306 // Not yet implemented
1307 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1308 {
1309     return false;
1310 }
1311
1312 wxDocument *wxDocManager::GetCurrentDocument() const
1313 {
1314     wxView *view = GetCurrentView();
1315     if (view)
1316         return view->GetDocument();
1317     else
1318         return NULL;
1319 }
1320
1321 // Make a default name for a new document
1322 #if WXWIN_COMPATIBILITY_2_8
1323 bool wxDocManager::MakeDefaultName(wxString& WXUNUSED(name))
1324 {
1325     // we consider that this function can only be overridden by the user code,
1326     // not called by it as it only makes sense to call it internally, so we
1327     // don't bother to return anything from here
1328     return false;
1329 }
1330 #endif // WXWIN_COMPATIBILITY_2_8
1331
1332 wxString wxDocManager::MakeNewDocumentName()
1333 {
1334     wxString name;
1335
1336 #if WXWIN_COMPATIBILITY_2_8
1337     if ( !MakeDefaultName(name) )
1338 #endif // WXWIN_COMPATIBILITY_2_8
1339     {
1340         name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1341         m_defaultDocumentNameCounter++;
1342     }
1343
1344     return name;
1345 }
1346
1347 // Make a frame title (override this to do something different)
1348 // If docName is empty, a document is not currently active.
1349 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1350 {
1351     wxString appName = wxTheApp->GetAppDisplayName();
1352     wxString title;
1353     if (!doc)
1354         title = appName;
1355     else
1356     {
1357         wxString docName = doc->GetUserReadableName();
1358         title = docName + wxString(_(" - ")) + appName;
1359     }
1360     return title;
1361 }
1362
1363
1364 // Not yet implemented
1365 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1366 {
1367     return NULL;
1368 }
1369
1370 // File history management
1371 void wxDocManager::AddFileToHistory(const wxString& file)
1372 {
1373     if (m_fileHistory)
1374         m_fileHistory->AddFileToHistory(file);
1375 }
1376
1377 void wxDocManager::RemoveFileFromHistory(size_t i)
1378 {
1379     if (m_fileHistory)
1380         m_fileHistory->RemoveFileFromHistory(i);
1381 }
1382
1383 wxString wxDocManager::GetHistoryFile(size_t i) const
1384 {
1385     wxString histFile;
1386
1387     if (m_fileHistory)
1388         histFile = m_fileHistory->GetHistoryFile(i);
1389
1390     return histFile;
1391 }
1392
1393 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1394 {
1395     if (m_fileHistory)
1396         m_fileHistory->UseMenu(menu);
1397 }
1398
1399 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1400 {
1401     if (m_fileHistory)
1402         m_fileHistory->RemoveMenu(menu);
1403 }
1404
1405 #if wxUSE_CONFIG
1406 void wxDocManager::FileHistoryLoad(const wxConfigBase& config)
1407 {
1408     if (m_fileHistory)
1409         m_fileHistory->Load(config);
1410 }
1411
1412 void wxDocManager::FileHistorySave(wxConfigBase& config)
1413 {
1414     if (m_fileHistory)
1415         m_fileHistory->Save(config);
1416 }
1417 #endif
1418
1419 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1420 {
1421     if (m_fileHistory)
1422         m_fileHistory->AddFilesToMenu(menu);
1423 }
1424
1425 void wxDocManager::FileHistoryAddFilesToMenu()
1426 {
1427     if (m_fileHistory)
1428         m_fileHistory->AddFilesToMenu();
1429 }
1430
1431 size_t wxDocManager::GetHistoryFilesCount() const
1432 {
1433     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1434 }
1435
1436
1437 // Find out the document template via matching in the document file format
1438 // against that of the template
1439 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1440 {
1441     wxDocTemplate *theTemplate = NULL;
1442
1443     // Find the template which this extension corresponds to
1444     for (size_t i = 0; i < m_templates.GetCount(); i++)
1445     {
1446         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1447         if ( temp->FileMatchesTemplate(path) )
1448         {
1449             theTemplate = temp;
1450             break;
1451         }
1452     }
1453     return theTemplate;
1454 }
1455
1456 // Prompts user to open a file, using file specs in templates.
1457 // Must extend the file selector dialog or implement own; OR
1458 // match the extension to the template extension.
1459
1460 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1461                                                 int noTemplates,
1462                                                 wxString& path,
1463                                                 long WXUNUSED(flags),
1464                                                 bool WXUNUSED(save))
1465 {
1466     // We can only have multiple filters in Windows and GTK
1467 #if defined(__WXMSW__) || defined(__WXGTK__) || defined(__WXMAC__)
1468     wxString descrBuf;
1469
1470     int i;
1471     for (i = 0; i < noTemplates; i++)
1472     {
1473         if (templates[i]->IsVisible())
1474         {
1475             // add a '|' to separate this filter from the previous one
1476             if ( !descrBuf.empty() )
1477                 descrBuf << wxT('|');
1478
1479             descrBuf << templates[i]->GetDescription()
1480                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1481                 << templates[i]->GetFileFilter();
1482         }
1483     }
1484 #else
1485     wxString descrBuf = wxT("*.*");
1486     wxUnusedVar(noTemplates);
1487 #endif
1488
1489     int FilterIndex = -1;
1490
1491     wxWindow* parent = wxFindSuitableParent();
1492
1493     wxString pathTmp = wxFileSelectorEx(_("Open File"),
1494                                         m_lastDirectory,
1495                                         wxEmptyString,
1496                                         &FilterIndex,
1497                                         descrBuf,
1498                                         0,
1499                                         parent);
1500
1501     wxDocTemplate *theTemplate = NULL;
1502     if (!pathTmp.empty())
1503     {
1504         if (!wxFileExists(pathTmp))
1505         {
1506             wxString msgTitle;
1507             if (!wxTheApp->GetAppDisplayName().empty())
1508                 msgTitle = wxTheApp->GetAppDisplayName();
1509             else
1510                 msgTitle = wxString(_("File error"));
1511
1512             (void)wxMessageBox(_("Sorry, could not open this file."), msgTitle, wxOK | wxICON_EXCLAMATION,
1513                 parent);
1514
1515             path = wxEmptyString;
1516             return NULL;
1517         }
1518         m_lastDirectory = wxPathOnly(pathTmp);
1519
1520         path = pathTmp;
1521
1522         // first choose the template using the extension, if this fails (i.e.
1523         // wxFileSelectorEx() didn't fill it), then use the path
1524         if ( FilterIndex != -1 )
1525             theTemplate = templates[FilterIndex];
1526         if ( !theTemplate )
1527             theTemplate = FindTemplateForPath(path);
1528         if ( !theTemplate )
1529         {
1530             // Since we do not add files with non-default extensions to the FileHistory this
1531             // can only happen if the application changes the allowed templates in runtime.
1532             (void)wxMessageBox(_("Sorry, the format for this file is unknown."),
1533                                 _("Open File"),
1534                                 wxOK | wxICON_EXCLAMATION, wxFindSuitableParent());
1535         }
1536     }
1537     else
1538     {
1539         path = wxEmptyString;
1540     }
1541
1542     return theTemplate;
1543 }
1544
1545 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1546                                                 int noTemplates, bool sort)
1547 {
1548     wxArrayString strings;
1549     wxDocTemplate **data = new wxDocTemplate *[noTemplates];
1550     int i;
1551     int n = 0;
1552
1553     for (i = 0; i < noTemplates; i++)
1554     {
1555         if (templates[i]->IsVisible())
1556         {
1557             int j;
1558             bool want = true;
1559             for (j = 0; j < n; j++)
1560             {
1561                 //filter out NOT unique documents + view combinations
1562                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1563                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1564                    )
1565                     want = false;
1566             }
1567
1568             if ( want )
1569             {
1570                 strings.Add(templates[i]->m_description);
1571
1572                 data[n] = templates[i];
1573                 n ++;
1574             }
1575         }
1576     }  // for
1577
1578     if (sort)
1579     {
1580         strings.Sort(); // ascending sort
1581         // Yes, this will be slow, but template lists
1582         // are typically short.
1583         int j;
1584         n = strings.Count();
1585         for (i = 0; i < n; i++)
1586         {
1587             for (j = 0; j < noTemplates; j++)
1588             {
1589                 if (strings[i] == templates[j]->m_description)
1590                     data[i] = templates[j];
1591             }
1592         }
1593     }
1594
1595     wxDocTemplate *theTemplate;
1596
1597     switch ( n )
1598     {
1599         case 0:
1600             // no visible templates, hence nothing to choose from
1601             theTemplate = NULL;
1602             break;
1603
1604         case 1:
1605             // don't propose the user to choose if he has no choice
1606             theTemplate = data[0];
1607             break;
1608
1609         default:
1610             // propose the user to choose one of several
1611             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1612                           (
1613                             _("Select a document template"),
1614                             _("Templates"),
1615                             strings,
1616                             (void **)data,
1617                             wxFindSuitableParent()
1618                           );
1619     }
1620
1621     delete[] data;
1622
1623     return theTemplate;
1624 }
1625
1626 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1627                                             int noTemplates, bool sort)
1628 {
1629     wxArrayString strings;
1630     wxDocTemplate **data = new wxDocTemplate *[noTemplates];
1631     int i;
1632     int n = 0;
1633
1634     for (i = 0; i < noTemplates; i++)
1635     {
1636         wxDocTemplate *templ = templates[i];
1637         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1638         {
1639             int j;
1640             bool want = true;
1641             for (j = 0; j < n; j++)
1642             {
1643                 //filter out NOT unique views
1644                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1645                     want = false;
1646             }
1647
1648             if ( want )
1649             {
1650                 strings.Add(templ->m_viewTypeName);
1651                 data[n] = templ;
1652                 n ++;
1653             }
1654         }
1655     }
1656
1657     if (sort)
1658     {
1659         strings.Sort(); // ascending sort
1660         // Yes, this will be slow, but template lists
1661         // are typically short.
1662         int j;
1663         n = strings.Count();
1664         for (i = 0; i < n; i++)
1665         {
1666             for (j = 0; j < noTemplates; j++)
1667             {
1668                 if (strings[i] == templates[j]->m_viewTypeName)
1669                     data[i] = templates[j];
1670             }
1671         }
1672     }
1673
1674     wxDocTemplate *theTemplate;
1675
1676     // the same logic as above
1677     switch ( n )
1678     {
1679         case 0:
1680             theTemplate = NULL;
1681             break;
1682
1683         case 1:
1684             theTemplate = data[0];
1685             break;
1686
1687         default:
1688             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1689                           (
1690                             _("Select a document view"),
1691                             _("Views"),
1692                             strings,
1693                             (void **)data,
1694                             wxFindSuitableParent()
1695                           );
1696
1697     }
1698
1699     delete[] data;
1700     return theTemplate;
1701 }
1702
1703 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1704 {
1705     if (!m_templates.Member(temp))
1706         m_templates.Append(temp);
1707 }
1708
1709 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1710 {
1711     m_templates.DeleteObject(temp);
1712 }
1713
1714 // Add and remove a document from the manager's list
1715 void wxDocManager::AddDocument(wxDocument *doc)
1716 {
1717     if (!m_docs.Member(doc))
1718         m_docs.Append(doc);
1719 }
1720
1721 void wxDocManager::RemoveDocument(wxDocument *doc)
1722 {
1723     m_docs.DeleteObject(doc);
1724 }
1725
1726 // Views or windows should inform the document manager
1727 // when a view is going in or out of focus
1728 void wxDocManager::ActivateView(wxView *view, bool activate)
1729 {
1730     if ( activate )
1731     {
1732         m_currentView = view;
1733     }
1734     else // deactivate
1735     {
1736         if ( m_currentView == view )
1737         {
1738             // don't keep stale pointer
1739             m_currentView = NULL;
1740         }
1741     }
1742 }
1743
1744 // ----------------------------------------------------------------------------
1745 // Default document child frame
1746 // ----------------------------------------------------------------------------
1747
1748 BEGIN_EVENT_TABLE(wxDocChildFrame, wxFrame)
1749     EVT_ACTIVATE(wxDocChildFrame::OnActivate)
1750     EVT_CLOSE(wxDocChildFrame::OnCloseWindow)
1751 END_EVENT_TABLE()
1752
1753 wxDocChildFrame::wxDocChildFrame(wxDocument *doc,
1754                                  wxView *view,
1755                                  wxFrame *frame,
1756                                  wxWindowID id,
1757                                  const wxString& title,
1758                                  const wxPoint& pos,
1759                                  const wxSize& size,
1760                                  long style,
1761                                  const wxString& name)
1762                : wxFrame(frame, id, title, pos, size, style, name)
1763 {
1764     m_childDocument = doc;
1765     m_childView = view;
1766     if (view)
1767         view->SetFrame(this);
1768 }
1769
1770 bool wxDocChildFrame::TryValidator(wxEvent& event)
1771 {
1772     if ( !m_childView )
1773         return false;
1774
1775     // FIXME: why is this needed here?
1776     m_childView->Activate(true);
1777
1778     return m_childView->ProcessEventHere(event);
1779 }
1780
1781 void wxDocChildFrame::OnActivate(wxActivateEvent& event)
1782 {
1783     wxFrame::OnActivate(event);
1784
1785     if (m_childView)
1786         m_childView->Activate(event.GetActive());
1787 }
1788
1789 void wxDocChildFrame::OnCloseWindow(wxCloseEvent& event)
1790 {
1791     if (m_childView)
1792     {
1793         bool ans = event.CanVeto()
1794                     ? m_childView->Close(false) // false means don't delete associated window
1795                     : true; // Must delete.
1796
1797         if (ans)
1798         {
1799             m_childView->Activate(false);
1800             delete m_childView;
1801             m_childView = NULL;
1802             m_childDocument = NULL;
1803
1804             this->Destroy();
1805         }
1806         else
1807             event.Veto();
1808     }
1809     else
1810         event.Veto();
1811 }
1812
1813 // ----------------------------------------------------------------------------
1814 // Default parent frame
1815 // ----------------------------------------------------------------------------
1816
1817 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1818     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1819     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1820     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1821 END_EVENT_TABLE()
1822
1823 wxDocParentFrame::wxDocParentFrame()
1824 {
1825     m_docManager = NULL;
1826 }
1827
1828 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1829                                    wxFrame *frame,
1830                                    wxWindowID id,
1831                                    const wxString& title,
1832                                    const wxPoint& pos,
1833                                    const wxSize& size,
1834                                    long style,
1835                                    const wxString& name)
1836                 : wxFrame(frame, id, title, pos, size, style, name)
1837 {
1838     m_docManager = manager;
1839 }
1840
1841 bool wxDocParentFrame::Create(wxDocManager *manager,
1842                               wxFrame *frame,
1843                               wxWindowID id,
1844                               const wxString& title,
1845                               const wxPoint& pos,
1846                               const wxSize& size,
1847                               long style,
1848                               const wxString& name)
1849 {
1850     m_docManager = manager;
1851     return base_type::Create(frame, id, title, pos, size, style, name);
1852 }
1853
1854 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1855 {
1856     Close();
1857 }
1858
1859 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1860 {
1861     int n = event.GetId() - wxID_FILE1;  // the index in MRU list
1862     wxString filename(m_docManager->GetHistoryFile(n));
1863     if ( filename.empty() )
1864         return;
1865
1866     wxString errMsg; // must contain exactly one "%s" if non-empty
1867     if ( wxFile::Exists(filename) )
1868     {
1869         // try to open it
1870         if ( m_docManager->CreateDocument(filename, wxDOC_SILENT) )
1871             return;
1872
1873         errMsg = _("The file '%s' couldn't be opened.");
1874     }
1875     else // file doesn't exist
1876     {
1877         errMsg = _("The file '%s' doesn't exist and couldn't be opened.");
1878     }
1879
1880
1881     wxASSERT_MSG( !errMsg.empty(), "should have an error message" );
1882
1883     // remove the file which we can't open from the MRU list
1884     m_docManager->RemoveFileFromHistory(n);
1885
1886     // and tell the user about it
1887     wxLogError(errMsg + '\n' +
1888                _("It has been removed from the most recently used files list."),
1889                filename);
1890 }
1891
1892 // Extend event processing to search the view's event table
1893 bool wxDocParentFrame::TryValidator(wxEvent& event)
1894 {
1895     return m_docManager && m_docManager->ProcessEventHere(event);
1896 }
1897
1898 // Define the behaviour for the frame closing
1899 // - must delete all frames except for the main one.
1900 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1901 {
1902     if (m_docManager->Clear(!event.CanVeto()))
1903     {
1904         this->Destroy();
1905     }
1906     else
1907         event.Veto();
1908 }
1909
1910 #if wxUSE_PRINTING_ARCHITECTURE
1911
1912 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1913              : wxPrintout(title)
1914 {
1915     m_printoutView = view;
1916 }
1917
1918 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
1919 {
1920     wxDC *dc = GetDC();
1921
1922     // Get the logical pixels per inch of screen and printer
1923     int ppiScreenX, ppiScreenY;
1924     GetPPIScreen(&ppiScreenX, &ppiScreenY);
1925     wxUnusedVar(ppiScreenY);
1926     int ppiPrinterX, ppiPrinterY;
1927     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
1928     wxUnusedVar(ppiPrinterY);
1929
1930     // This scales the DC so that the printout roughly represents the
1931     // the screen scaling. The text point size _should_ be the right size
1932     // but in fact is too small for some reason. This is a detail that will
1933     // need to be addressed at some point but can be fudged for the
1934     // moment.
1935     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
1936
1937     // Now we have to check in case our real page size is reduced
1938     // (e.g. because we're drawing to a print preview memory DC)
1939     int pageWidth, pageHeight;
1940     int w, h;
1941     dc->GetSize(&w, &h);
1942     GetPageSizePixels(&pageWidth, &pageHeight);
1943     wxUnusedVar(pageHeight);
1944
1945     // If printer pageWidth == current DC width, then this doesn't
1946     // change. But w might be the preview bitmap width, so scale down.
1947     float overallScale = scale * (float)(w/(float)pageWidth);
1948     dc->SetUserScale(overallScale, overallScale);
1949
1950     if (m_printoutView)
1951     {
1952         m_printoutView->OnDraw(dc);
1953     }
1954     return true;
1955 }
1956
1957 bool wxDocPrintout::HasPage(int pageNum)
1958 {
1959     return (pageNum == 1);
1960 }
1961
1962 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
1963 {
1964     if (!wxPrintout::OnBeginDocument(startPage, endPage))
1965         return false;
1966
1967     return true;
1968 }
1969
1970 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
1971 {
1972     *minPage = 1;
1973     *maxPage = 1;
1974     *selPageFrom = 1;
1975     *selPageTo = 1;
1976 }
1977
1978 #endif // wxUSE_PRINTING_ARCHITECTURE
1979
1980 // ----------------------------------------------------------------------------
1981 // File history (a.k.a. MRU, most recently used, files list)
1982 // ----------------------------------------------------------------------------
1983
1984 wxFileHistory::wxFileHistory(size_t maxFiles, wxWindowID idBase)
1985 {
1986     m_fileMaxFiles = maxFiles;
1987     m_idBase = idBase;
1988 }
1989
1990 void wxFileHistory::AddFileToHistory(const wxString& file)
1991 {
1992     // check if we don't already have this file
1993     const wxFileName fnNew(file);
1994     size_t i,
1995            numFiles = m_fileHistory.size();
1996     for ( i = 0; i < numFiles; i++ )
1997     {
1998         if ( fnNew == m_fileHistory[i] )
1999         {
2000             // we do have it, move it to the top of the history
2001             RemoveFileFromHistory(i);
2002             numFiles--;
2003             break;
2004         }
2005     }
2006
2007     // if we already have a full history, delete the one at the end
2008     if ( numFiles == m_fileMaxFiles )
2009     {
2010         RemoveFileFromHistory(--numFiles);
2011     }
2012
2013     // add a new menu item to all file menus (they will be updated below)
2014     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2015         node;
2016         node = node->GetNext() )
2017     {
2018         wxMenu * const menu = (wxMenu *)node->GetData();
2019
2020         if ( !numFiles && menu->GetMenuItemCount() )
2021             menu->AppendSeparator();
2022
2023         // label doesn't matter, it will be set below anyhow, but it can't
2024         // be empty (this is supposed to indicate a stock item)
2025         menu->Append(m_idBase + numFiles, " ");
2026     }
2027
2028     // insert the new file in the beginning of the file history
2029     m_fileHistory.insert(m_fileHistory.begin(), file);
2030     numFiles++;
2031
2032     // update the labels in all menus
2033     for ( i = 0; i < numFiles; i++ )
2034     {
2035         // if in same directory just show the filename; otherwise the full path
2036         const wxFileName fnOld(m_fileHistory[i]);
2037
2038         wxString pathInMenu;
2039         if ( fnOld.GetPath() == fnNew.GetPath() )
2040         {
2041             pathInMenu = fnOld.GetFullName();
2042         }
2043         else // file in different directory
2044         {
2045             // absolute path; could also set relative path
2046             pathInMenu = m_fileHistory[i];
2047         }
2048
2049         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2050               node;
2051               node = node->GetNext() )
2052         {
2053             wxMenu * const menu = (wxMenu *)node->GetData();
2054
2055             menu->SetLabel(m_idBase + i, GetMRUEntryLabel(i, pathInMenu));
2056         }
2057     }
2058 }
2059
2060 void wxFileHistory::RemoveFileFromHistory(size_t i)
2061 {
2062     size_t numFiles = m_fileHistory.size();
2063     wxCHECK_RET( i < numFiles,
2064                  wxT("invalid index in wxFileHistory::RemoveFileFromHistory") );
2065
2066     // delete the element from the array
2067     m_fileHistory.RemoveAt(i);
2068     numFiles--;
2069
2070     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2071           node;
2072           node = node->GetNext() )
2073     {
2074         wxMenu * const menu = (wxMenu *) node->GetData();
2075
2076         // shift filenames up
2077         for ( size_t j = i; j < numFiles; j++ )
2078         {
2079             menu->SetLabel(m_idBase + j, GetMRUEntryLabel(j, m_fileHistory[j]));
2080         }
2081
2082         // delete the last menu item which is unused now
2083         const wxWindowID lastItemId = m_idBase + numFiles;
2084         if ( menu->FindItem(lastItemId) )
2085             menu->Delete(lastItemId);
2086
2087         // delete the last separator too if no more files are left
2088         if ( m_fileHistory.empty() )
2089         {
2090             const wxMenuItemList::compatibility_iterator
2091                 nodeLast = menu->GetMenuItems().GetLast();
2092             if ( nodeLast )
2093             {
2094                 wxMenuItem * const lastMenuItem = nodeLast->GetData();
2095                 if ( lastMenuItem->IsSeparator() )
2096                     menu->Delete(lastMenuItem);
2097             }
2098             //else: menu is empty somehow
2099         }
2100     }
2101 }
2102
2103 void wxFileHistory::UseMenu(wxMenu *menu)
2104 {
2105     if ( !m_fileMenus.Member(menu) )
2106         m_fileMenus.Append(menu);
2107 }
2108
2109 void wxFileHistory::RemoveMenu(wxMenu *menu)
2110 {
2111     m_fileMenus.DeleteObject(menu);
2112 }
2113
2114 #if wxUSE_CONFIG
2115 void wxFileHistory::Load(const wxConfigBase& config)
2116 {
2117     m_fileHistory.Clear();
2118
2119     wxString buf;
2120     buf.Printf(wxT("file%d"), 1);
2121
2122     wxString historyFile;
2123     while ((m_fileHistory.GetCount() < m_fileMaxFiles) &&
2124            config.Read(buf, &historyFile) && !historyFile.empty())
2125     {
2126         m_fileHistory.Add(historyFile);
2127
2128         buf.Printf(wxT("file%d"), (int)m_fileHistory.GetCount()+1);
2129         historyFile = wxEmptyString;
2130     }
2131
2132     AddFilesToMenu();
2133 }
2134
2135 void wxFileHistory::Save(wxConfigBase& config)
2136 {
2137     size_t i;
2138     for (i = 0; i < m_fileMaxFiles; i++)
2139     {
2140         wxString buf;
2141         buf.Printf(wxT("file%d"), (int)i+1);
2142         if (i < m_fileHistory.GetCount())
2143             config.Write(buf, wxString(m_fileHistory[i]));
2144         else
2145             config.Write(buf, wxEmptyString);
2146     }
2147 }
2148 #endif // wxUSE_CONFIG
2149
2150 void wxFileHistory::AddFilesToMenu()
2151 {
2152     if ( m_fileHistory.empty() )
2153         return;
2154
2155     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2156           node;
2157           node = node->GetNext() )
2158     {
2159         AddFilesToMenu((wxMenu *) node->GetData());
2160     }
2161 }
2162
2163 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2164 {
2165     if ( m_fileHistory.empty() )
2166         return;
2167
2168     if ( menu->GetMenuItemCount() )
2169         menu->AppendSeparator();
2170
2171     for ( size_t i = 0; i < m_fileHistory.GetCount(); i++ )
2172     {
2173         menu->Append(m_idBase + i, GetMRUEntryLabel(i, m_fileHistory[i]));
2174     }
2175 }
2176
2177 // ----------------------------------------------------------------------------
2178 // Permits compatibility with existing file formats and functions that
2179 // manipulate files directly
2180 // ----------------------------------------------------------------------------
2181
2182 #if wxUSE_STD_IOSTREAM
2183
2184 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2185 {
2186     wxFFile file(filename, _T("rb"));
2187     if ( !file.IsOpened() )
2188         return false;
2189
2190     char buf[4096];
2191
2192     size_t nRead;
2193     do
2194     {
2195         nRead = file.Read(buf, WXSIZEOF(buf));
2196         if ( file.Error() )
2197             return false;
2198
2199         stream.write(buf, nRead);
2200         if ( !stream )
2201             return false;
2202     }
2203     while ( !file.Eof() );
2204
2205     return true;
2206 }
2207
2208 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2209 {
2210     wxFFile file(filename, _T("wb"));
2211     if ( !file.IsOpened() )
2212         return false;
2213
2214     char buf[4096];
2215     do
2216     {
2217         stream.read(buf, WXSIZEOF(buf));
2218         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2219         {
2220             if ( !file.Write(buf, stream.gcount()) )
2221                 return false;
2222         }
2223     }
2224     while ( !stream.eof() );
2225
2226     return true;
2227 }
2228
2229 #else // !wxUSE_STD_IOSTREAM
2230
2231 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2232 {
2233     wxFFile file(filename, _T("rb"));
2234     if ( !file.IsOpened() )
2235         return false;
2236
2237     char buf[4096];
2238
2239     size_t nRead;
2240     do
2241     {
2242         nRead = file.Read(buf, WXSIZEOF(buf));
2243         if ( file.Error() )
2244             return false;
2245
2246         stream.Write(buf, nRead);
2247         if ( !stream )
2248             return false;
2249     }
2250     while ( !file.Eof() );
2251
2252     return true;
2253 }
2254
2255 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2256 {
2257     wxFFile file(filename, _T("wb"));
2258     if ( !file.IsOpened() )
2259         return false;
2260
2261     char buf[4096];
2262     for ( ;; )
2263     {
2264         stream.Read(buf, WXSIZEOF(buf));
2265
2266         const size_t nRead = stream.LastRead();
2267         if ( !nRead )
2268         {
2269             if ( stream.Eof() )
2270                 break;
2271
2272             return false;
2273         }
2274
2275         if ( !file.Write(buf, nRead) )
2276             return false;
2277     }
2278
2279     return true;
2280 }
2281
2282 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2283
2284 #endif // wxUSE_DOC_VIEW_ARCHITECTURE